Re: [Frameworks] increasing bulb brightness 16mm
Also, if you are controlling the venue, take a good look at the screen material and its reflectance. A long narrow hall could benefit from a directional type of screen. Jean-Louis On 2014-05-08, at 10:55 AM, Alex MacKenzie wrote: Does anyone have any expertise/experience around increasing bulb wattage over and above that recommended by projector manufacturer? I want to brighten a 24V/250W 16mm bulb setup, but I obviously don’t want any electrical fires or overheating internally. Is there a breathing area where little if anything would need to be changed internally that is safe? (And no, I don’t want any water-cooled, heat-sinked LED setup, already researched that and it is a bad idea on many fronts.) Thanks. ___ FrameWorks mailing list FrameWorks@jonasmekasfilms.com https://mailman-mail5.webfaction.com/listinfo/frameworks ___ FrameWorks mailing list FrameWorks@jonasmekasfilms.com https://mailman-mail5.webfaction.com/listinfo/frameworks
Re: [Frameworks] increasing bulb brightness 16mm
Well, what is the projector? For the most part it's probably a bad idea. One exception is that if you have projectors that use ordinary incandescent lamps, replacing those with halogen lamps of the same input power and adjusting the condenser and mirror assemblies can give you added brightness safely. But if you have a 24V/250W lamp like the FJL lamp used in the Bauer classroom projectors, you already have about the brightest lamp you're going to get with that input power. Have you considered upgrading to a brighter projector? There are plenty of the Bell and Howell 500-series projectors out there and they are bright and fairly light on film. The 300-series are even lighter on film although more bulky. Avoid the auto-thread 500-series ones, though. --scott ___ FrameWorks mailing list FrameWorks@jonasmekasfilms.com https://mailman-mail5.webfaction.com/listinfo/frameworks
Re: [Frameworks] increasing bulb brightness 16mm
On May 8, 2014, at 8:30 AM, George, Sherman wrote: Given that the bulb is 24 Volts means that is powered by a transformer. Installing a bulb with higher current would probably overheat the transformer resulting in excess smoke-never a good thing in electric devices. Sherman On May 8, 2014, at 7:55 AM, Alex MacKenzie wrote: Does anyone have any expertise/experience around increasing bulb wattage over and above that recommended by projector manufacturer? I want to brighten a 24V/250W 16mm bulb setup, but I obviously don’t want any electrical fires or overheating internally. Is there a breathing area where little if anything would need to be changed internally that is safe? (And no, I don’t want any water-cooled, heat-sinked LED setup, already researched that and it is a bad idea on many fronts.) Thanks. ___ FrameWorks mailing list FrameWorks@jonasmekasfilms.com https://mailman-mail5.webfaction.com/listinfo/frameworks Sherman George sgeo...@ucsd.edu 858-229-4368 ___ FrameWorks mailing list FrameWorks@jonasmekasfilms.com https://mailman-mail5.webfaction.com/listinfo/frameworks ___ FrameWorks mailing list FrameWorks@jonasmekasfilms.com https://mailman-mail5.webfaction.com/listinfo/frameworks
Re: [Frameworks] increasing bulb brightness 16mm
Does anyone have any expertise/experience around increasing bulb wattage over and above that recommended by projector manufacturer? I want to brighten a 24V/250W 16mm bulb setup, 250W is the max they make for 24V projectors. You can't get a higher wattage lamp. You probably have an ELC. It's rated at 800 lumens. An ELC-HL, also 250W, is rated at 950 lumens. The trade off is it doesn't last as long. Image brightness is as much or more a factor of lens speed than lamp brightness. It your projector has, say, an f 1.8 lens, you'd get a significantly brighter picture if you could find an f 1.2 lens that fits it. ___ FrameWorks mailing list FrameWorks@jonasmekasfilms.com https://mailman-mail5.webfaction.com/listinfo/frameworks
